CN214331371U - Planetary gear train and planetary reducer capable of automatically eliminating gaps in radial direction - Google Patents
Planetary gear train and planetary reducer capable of automatically eliminating gaps in radial direction Download PDFInfo
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- CN214331371U CN214331371U CN202023346474.1U CN202023346474U CN214331371U CN 214331371 U CN214331371 U CN 214331371U CN 202023346474 U CN202023346474 U CN 202023346474U CN 214331371 U CN214331371 U CN 214331371U
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Abstract
The utility model belongs to the technical field of the planetary reducer, concretely relates to radial planetary gear train and planetary reducer who eliminates clearance automatically. The planetary reducer capable of automatically eliminating the gap in the radial direction comprises a shell, wherein a planetary reduction mechanism (namely a planetary gear train) is arranged in the shell, the planetary reduction mechanism comprises an inner gear ring, a planetary carrier, planetary gears and a sun gear, the inner gear ring is fixed in the shell, the planetary gears are arranged in the inner gear ring and are uniformly distributed around the sun gear, and the planetary gears are connected with one another through the planetary carrier to form a planetary gear assembly. The sun gear is connected with the input shaft, the planet gear assembly is connected with the output shaft, the inner gear ring is a flexible gear ring, and the pitch diameter of the inner gear ring is slightly smaller than that of the planet gear assembly matched with the inner gear ring. The utility model discloses can real-time automatic compensation transmission clearance and gear manufacturing error between each gear, make planetary reducer's precision improve greatly, planetary reducer shell is integrated into one piece, and furthest's reduction potential leakage point has stopped the oil leak.
Description
Technical Field
The utility model relates to a radial planetary gear train and planetary reducer who eliminates clearance automatically belongs to planetary reducer technical field.
Background
The planetary reducer is an industrial product with wide application, and can reduce the rotating speed of a motor and increase the output torque.
1. In the existing planetary reducer structure on the market, the inner gear ring is a rigid gear ring and is connected with the rear end cover into a whole through a bolt, the inner gear ring can be gradually worn along with the prolonging of the service time, the transmission gap can be larger and larger, the reverse gap of the reducer is larger and larger, the transmission precision is reduced, the noise in the working process is increased, and the reducer can not work normally even in serious conditions.
2. In order to facilitate the installation and the positioning of components in the shell, the shell of the existing planetary reducer on the market is of a split structure, so that the number of leakage points of the shell is increased, and the risk of oil leakage is increased. Moreover, the shell is of a split structure, transmission rigidity of the speed reducer cannot be well guaranteed, coaxiality deviation of connecting pieces caused by installation errors of the front end cover, the rear end cover and the inner gear ring is caused, and transmission precision is reduced.
SUMMERY OF THE UTILITY MODEL
According to the not enough among the above prior art, the utility model discloses the technical problem who solves is: the defects of the prior art are overcome, the planetary gear train and the planetary reducer which radially deform in real time and can radially and automatically eliminate gaps are provided, the gaps among the gears are eliminated all the time, the casing is of an integrated structure, oil leakage is avoided to the maximum extent, and the problems are solved.
Radial automatic planetary gear train who eliminates clearance, including ring gear, planet carrier, planet wheel and sun gear, each planet wheel sets up in the ring gear and the equipartition around the sun gear, each planet wheel passes through planet carrier interconnect and forms the planet wheel subassembly, the ring gear be flexible ring gear, the pitch diameter size of ring gear slightly is less than the pitch diameter size of complex planet wheel subassembly with it.
The utility model discloses a planetary reducer ring gear is flexible ring gear, under the effect of planet wheel drive power, can take place radial deformation, and ring gear and planet wheel, various clearances between planet wheel and the sun gear have just in time been offset to the contractile force that radial deformation produced. And as the clearance caused by the abrasion among the gears is increased along with the use time, the clearance among the gears is eliminated all the time due to the real-time radial deformation of the flexible gear ring in the operation. After the planetary reducer is applied to the field of speed reducers, the precision of the planetary reducer is greatly improved, and the service life of the planetary reducer is greatly prolonged.
Preferably, the pitch diameter of the inner gear ring is 0.1-1.5 mm smaller than the pitch diameter of the planetary wheel assembly matched with the inner gear ring.
The utility model provides a radial automatic clearance's planetary reducer, includes the casing, is equipped with planetary reduction mechanism in the casing, planetary reduction mechanism include ring gear, planet carrier, planet wheel and sun gear, the ring gear is fixed in the casing, each planet wheel sets up in the ring gear and the equipartition is around the sun gear, each planet wheel passes through planet carrier interconnect and forms the planet wheel subassembly, the sun gear is connected the input shaft, the planet wheel subassembly is connected the output shaft, the ring gear be flexible ring gear, the pitch diameter size of ring gear slightly is less than the pitch diameter size of planet wheel subassembly with it complex.
When the planet carrier drives the planet wheel to rotate, because the pitch diameter size of the planet wheel matching assembly is larger than that of the inner gear ring, the inner gear ring is forced to generate radial deformation under the expansion force of the planet wheel assembly, and the shrinkage force caused by the radial deformation of the inner gear ring is transmitted to the planet wheel and the sun wheel, so that the transmission gap between the gears is eliminated, the transmission gap between the gears and the gear manufacturing error are automatically compensated in real time, the reverse gap of the planetary speed reducer is guaranteed to be zero arc minutes, the precision of the planetary speed reducer is greatly improved, and the service life is greatly prolonged.
Preferably, the pitch diameter of the inner gear ring is 0.1-1.5 mm smaller than the pitch diameter of the planetary wheel assembly matched with the inner gear ring.
Casing formula structure as an organic whole, planet reduction gears is fixed in the casing through retaining ring for the hole. The planetary reducer shell is formed integrally, and is greatly different from the conventional speed reducer on the market in that a screw can not be connected with the front end cover, the inner gear ring and the rear end cover. Therefore, potential leakage points are reduced to the maximum extent, and oil leakage is avoided. The planetary reducer shell is integrally formed, so that the maximum value of the transmission rigidity of the reducer is ensured, the coaxiality deviation of connecting pieces caused by the installation errors of the front end cover, the rear end cover and the inner gear ring is avoided, the transmission precision is ensured, and the precision service life of the planetary reducer is prolonged by more than 10 times.
The utility model discloses an output shaft is equipped with the skeleton oil blanket with the rotation junction of casing.
An output bearing is arranged at the output end of the shell and used for axially and radially positioning the output shaft; the rear of the planet wheel is provided with a planet wheel rear support, the planet wheel rear support is connected with a positioning bearing, the positioning bearing is supported by a hole retainer ring, and the positioning bearing is used for axially and radially positioning the planet wheel rear support.
The input shaft is connected with an input shaft jacket, the rear support of the planet wheel is connected with an input bearing, and the input bearing axially and radially positions the input shaft jacket.
The casing cooperates output bearing, planet wheel after-poppet, location bearing, hole with retaining ring and input bearing, perfect solution because the casing of integral type structure, the problem of the not good location of inner part that brings.
Compared with the prior art, the utility model beneficial effect who has is:
the utility model discloses can real-time automatic compensation transmission clearance and gear manufacturing error between each gear to this reverse clearance of guaranteeing planetary reducer is zero arc minute, makes planetary reducer's precision improve greatly, and the life-span prolongs greatly.
The planetary reducer shell is integrally formed, so that potential leakage points are reduced to the maximum extent, and oil leakage is avoided. The maximum value of the transmission rigidity of the speed reducer is ensured, the coaxiality deviation of connecting pieces caused by the installation errors of the front end cover, the rear end cover and the inner gear ring is avoided, the transmission precision is ensured, the precision service life of the planetary speed reducer is prolonged by more than 10 times, and the planetary speed reducer has good economic benefit.
Structural design is reasonable ingenious, when adopting integrated into one piece shell, the perfect problem of having solved the location of internals.
Drawings
FIG. 1 is a schematic view of a half-section structure of the present invention;
FIG. 2 is a schematic diagram of the planetary gear train or planetary reduction mechanism of the present invention;
fig. 3 is a schematic view of the construction of the orifice ring.
In the figure: 1. an output shaft; 2. framework oil seal; 3. an output bearing; 4. a planetary wheel shaft; 5. a housing; 6. an inner gear ring; 7. A planet carrier; 8. a planet wheel; 9. the planet wheel is supported at the back; 10. a retainer ring for a bore; 11. positioning the bearing; 12. an input bearing; 13. An input shaft jacket; 14. an input shaft; 15. a sun gear.
Detailed Description
The invention will be further described with reference to the following examples:
the first embodiment is as follows:
as shown in fig. 2, the planetary gear train capable of radially and automatically eliminating the gap comprises an inner gear ring 6, a planet carrier 7 (not shown in fig. 2), planet wheels 8 and a sun gear 15, wherein the planet wheels 8 are arranged in the inner gear ring 6 and are uniformly distributed around the sun gear 15, the planet wheels 8 are connected with each other through the planet carrier 7 to form a planet wheel assembly, the inner gear ring 6 is a flexible gear ring, and the middle diameter of the inner gear ring 6 is slightly smaller than that of the planet wheel assembly matched with the inner gear ring 6. The middle diameter size of the inner gear ring 6 in the embodiment is 0.1-1.5 mm smaller than the middle diameter size of the planetary wheel assembly matched with the inner gear ring 6, preferably 0.3mm, and the design value enables the shrinkage force generated by radial deformation of the inner gear ring 6 to just offset the inner gear ring 6 and the planet wheels 8 and various gaps between the planet wheels 8 and the sun wheel 15, so that the use is not influenced by over-tight transmission.
Example two:
as shown in fig. 1 to 3, a planetary reducer capable of radially and automatically eliminating a gap includes a casing 5, a first-stage planetary reduction mechanism (which may be designed as a multi-stage planetary reduction mechanism, and the principle of each stage of reduction mechanism is consistent) is provided in the casing 5, the planetary reduction mechanism includes an inner gear ring 6, a planet carrier 7, planet wheels 8 and a sun gear 15, the inner gear ring 6 is fixed in the casing 5, the planet wheels 8 are arranged in the inner gear ring 6 and uniformly distributed around the sun gear 15, the planet wheels 8 are connected with a planet wheel shaft 4, the planet wheel shaft 4 is connected with the planet carrier 7, the planet wheel assembly is formed by interconnecting the planet carrier 7, the sun gear 15 is connected with an input shaft 14, the planet wheel assembly is connected with an output shaft 1, the inner gear ring 6 is a flexible gear ring, and the middle diameter of the inner gear ring 6 is slightly smaller than that of the planet wheel assembly matched therewith. The output shaft 1 and the planet carrier 7 are of an integrated structure, and the input shaft 14 and the sun gear 15 are of an integrated structure.
The inner gear ring 6 of the present embodiment has a pitch diameter smaller than that of the planetary wheel assembly by 0.1 to 1.5 mm.
The casing 5 is an integral structure, and the planetary reduction mechanism is fixed in the casing 5 through a retainer ring 10 for holes. And a framework oil seal 2 is arranged at the rotary joint of the output shaft 1 and the shell 5. An output bearing 3 is arranged at the output end of the shell 5, and the output bearing 3 axially and radially positions the output shaft 1; planet wheel 8 rear is equipped with planet wheel rear support 9, and planet wheel rear support 9 connects location bearing 11, and retaining ring 10 for the hole supports location bearing 11, and location bearing 11 carries out axial and radial location to planet wheel rear support 9. The input shaft 14 is connected with an input shaft jacket 13 (the input shaft jacket 13 is connected with a motor output shaft), the planet wheel rear support 9 is connected with an input bearing 12, and the input bearing 12 axially and radially positions the input shaft jacket 13.
The utility model discloses can real-time automatic compensation transmission clearance and gear manufacturing error between each gear to this reverse clearance of guaranteeing planetary reducer is zero arc minute, makes planetary reducer's precision improve greatly, and the life-span prolongs greatly. The planetary reducer shell is integrally formed, so that potential leakage points are reduced to the maximum extent, and oil leakage is avoided. The maximum value of the transmission rigidity of the speed reducer is ensured, the coaxiality deviation of connecting pieces caused by the installation errors of the front end cover, the rear end cover and the inner gear ring 6 is avoided, the transmission precision is ensured, the precision service life of the planetary speed reducer is prolonged by more than 10 times, and the planetary speed reducer has good economic benefit. The casing 5 is matched with the output bearing 3, the planet wheel rear support 9, the positioning bearing 11, the hole retainer ring 10 and the input bearing 12 to position components in the casing 5, and the problem of positioning of internal components is perfectly solved.
Claims (8)
1. The utility model provides a radial automatic clearance's planetary gear train, includes ring gear (6), planet carrier (7), planet wheel (8) and sun gear (15), each planet wheel (8) set up in ring gear (6) and the equipartition around sun gear (15), each planet wheel (8) pass through planet carrier (7) interconnect and form the planet wheel subassembly, its characterized in that: the inner gear ring (6) is a flexible gear ring, and the pitch diameter of the inner gear ring (6) is smaller than that of the planetary wheel assembly matched with the inner gear ring.
2. The radial automatic backlash elimination planetary gear train according to claim 1, wherein: the pitch diameter of the inner gear ring (6) is 0.1-1.5 mm smaller than that of the planetary wheel assembly matched with the inner gear ring.
3. The utility model provides a radial planetary reducer who eliminates clearance automatically, includes casing (5), is equipped with planetary reduction mechanism in casing (5), planetary reduction mechanism include ring gear (6), planet carrier (7), planet wheel (8) and sun gear (15), ring gear (6) are fixed in casing (5), each planet wheel (8) set up in ring gear (6) and the equipartition is around sun gear (15), each planet wheel (8) form the planet wheel subassembly through planet carrier (7) interconnect, input shaft (14) are connected in sun gear (15), planet wheel subassembly connection output shaft (1), its characterized in that: the inner gear ring (6) is a flexible gear ring, and the pitch diameter of the inner gear ring (6) is smaller than that of the planetary wheel assembly matched with the inner gear ring.
4. The radial automatic backlash elimination planetary reducer according to claim 3, wherein: the pitch diameter of the inner gear ring (6) is 0.1-1.5 mm smaller than that of the planetary wheel assembly matched with the inner gear ring.
5. The radial automatic backlash elimination planetary reducer according to claim 3, wherein: the casing (5) is of an integrated structure, and the planetary reduction mechanism is fixed in the casing (5) through a retainer ring (10) for holes.
6. The radial automatic backlash elimination planetary reducer according to claim 5, wherein: a framework oil seal (2) is arranged at the rotary joint of the output shaft (1) and the shell (5).
7. The radial automatic backlash elimination planetary reducer according to claim 5, wherein: an output bearing (3) is arranged at the output end of the shell (5), and the output bearing (3) axially and radially positions the output shaft (1); planet wheel (8) rear portion is equipped with planet wheel after-poppet (9), and planet wheel after-poppet (9) are connected location bearing (11), and retaining ring (10) for the hole supports location bearing (11), and location bearing (11) carry out axial and radial location to planet wheel after-poppet (9).
8. The radial automatic backlash elimination planetary reducer according to claim 7, wherein: the input shaft (14) is connected with an input shaft jacket (13), the planet wheel rear support (9) is connected with an input bearing (12), and the input bearing (12) axially and radially positions the input shaft jacket (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023346474.1U CN214331371U (en) | 2020-12-31 | 2020-12-31 | Planetary gear train and planetary reducer capable of automatically eliminating gaps in radial direction |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023346474.1U CN214331371U (en) | 2020-12-31 | 2020-12-31 | Planetary gear train and planetary reducer capable of automatically eliminating gaps in radial direction |
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| CN214331371U true CN214331371U (en) | 2021-10-01 |
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| CN202023346474.1U Active CN214331371U (en) | 2020-12-31 | 2020-12-31 | Planetary gear train and planetary reducer capable of automatically eliminating gaps in radial direction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114992288A (en) * | 2022-07-28 | 2022-09-02 | 常州南鹏机械有限公司 | Flexible transmission planetary reducer |
| CN115027654A (en) * | 2022-07-15 | 2022-09-09 | 宁波海伯集团有限公司 | Marine propeller |
-
2020
- 2020-12-31 CN CN202023346474.1U patent/CN214331371U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115027654A (en) * | 2022-07-15 | 2022-09-09 | 宁波海伯集团有限公司 | Marine propeller |
| CN114992288A (en) * | 2022-07-28 | 2022-09-02 | 常州南鹏机械有限公司 | Flexible transmission planetary reducer |
| CN114992288B (en) * | 2022-07-28 | 2022-12-09 | 常州南鹏机械有限公司 | Flexible transmission planetary reducer |
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